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Property, Plant And Equipment, Intangible Assets And Goodwill (Narrative) (Details) (USD $)
In Millions, unless otherwise specified
3 Months Ended 6 Months Ended
Jun. 30, 2012
Jun. 30, 2011
Jun. 30, 2012
Jun. 30, 2011
Property, Plant And Equipment, Intangible Assets And Goodwill [Abstract]        
Amortization expense $ 19.8 $ 23.4 $ 37.1 $ 46.4